<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>登录</title>
    <link rel="stylesheet" href="static/plugins/bootstrap-3.4.1/css/bootstrap.css">
    <style>
        .account {
            width: 500px;
            border: 1px solid #dddddd;
            border-radius: 5px;
            box-shadow: 5px 5px 20px #aaaaaa;

            margin-left: auto;
            margin-right: auto;
            margin-top: 100px;
            padding: 20px 40px;
        }

        .account h2 {
            text-align: center;
        }
    </style>
</head>
<body>
<div class="account">
    <h2>用户登录</h2>
    <form>
        <div class="form-group">
            <label for="exampleInputEmail1">用户名</label>
            <input type="email" class="form-control" id="exampleInputEmail1" placeholder="用户名">
        </div>
        <div class="form-group">
            <label for="exampleInputPassword1">密码</label>
            <input type="password" class="form-control" id="exampleInputPassword1" placeholder="密码">
        </div>
        <button type="submit" class="btn btn-primary">登 录</button>
    </form>
</div>
</body>
</html>